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polished aluminum sheet

polished aluminum sheet

Time :2020/12/28 Click :

As we all know, aluminum has been used in many aspects in the home, especially in aluminum kitchen utensils and 3C electronic digital products and smart phones. These items usually require beautiful appearance and special performance conditions to attract Consumers, chasing beautiful objects are people’s nature, which can attract consumers’ attention and then make people explore its intrinsic value. Therefore, the aluminum products in life are mirrored.
Henan Signi Aluminium specializes in the production of polished aluminum sheet. The surface polishing process of aluminum sheet includes three types of mechanical polishing, electrolytic polishing and chemical polishing.
Mechanical polishing is a polishing method that relies on cutting and plastic deformation of the material surface to remove the polished convexities to obtain a smooth surface. Generally, oil stone sticks, wool wheels, sandpaper, etc. are used, and manual operations are the main ones.
Chemical polishing is to make the surface microscopic convex part of the material in the chemical medium dissolve preferentially than the concave part, thereby obtaining a smooth surface. The main advantage of this method is that it does not require complicated equipment, can polish workpieces with complex shapes, and can polish many workpieces at the same time, with high efficiency.


The basic principle of electrolytic polishing is the same as that of chemical polishing. It relies on the selective dissolution of tiny protrusions on the surface of the material to make the surface smooth.
Polished aluminum sheet is the process of polishing the surface of the aluminum sheet, degreasing the surface, anodic oxidation coating, and polishing. In fact, it is not the process of cutting aluminum itself, but just continuously polishing the oxide film. As we all know, aluminum products will form an oxide film on the surface in the air temperature. During polishing, the abrasive (polishing paste) will throw away the oxide film on the surface of the article. After the substrate is exposed, it will quickly oxidize and then be thrown away. Repeat until the toss becomes bright. However, the aluminum products after grinding and mechanical polishing, although they have obtained a bright appearance, if they are directly anodized, only a smooth oxide film can be obtained, and a film with a high reflectance coefficient cannot be obtained, so follow-up Chemical polishing or electrolytic polishing to remove the crystal deformation layer on the surface to obtain a bright, detailed, beautiful and gorgeous oxide film. Generally speaking, the effect of chemical polishing will vary with the types and contents of each component of aluminum alloy. Aluminum alloys containing zinc and copper have poorer effects. The higher the purity of aluminum, the better the effect, and the reflectivity after polishing is also The higher it is, the better the polishing effect is on construction profiles, high-purity aluminum, industrial pure aluminum, aluminum-magnesium alloy and other products. After the polished mirror surface treatment, the aluminum products are anti-static, dust-free and easy to clean, have strong anti-fingerprint ability, and have scratch-resistant surface hardness up to sapphire level, the surface oxide layer will never fall off, the color is uniform, and it can give metal devices a high surface Luminosity effect, and can also show 95% high specular reflection performance.
Polished aluminum sheet solves the problem of easy sticking and greasy on the surface of kitchen items and aluminum tableware. After polishing, the surface of aluminum products is not only more beautiful, but also the non-stickiness is greatly improved, which makes the surface of the items smoother and even smoother Dispersion reduces the adsorption of corrosive media and improves the corrosion resistance of items. Therefore, it has more applications in the finishing industry, such as lighting, home appliances, kitchenware, electronic appliances, and mobile phone shells.

Company :Henan Signi Aluminium  
Email    Mobile :86 17344894490